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WO2021224241A1 - Manually controlled electromagnetic actuator and parking brake valve provided with such an actuator - Google Patents

Manually controlled electromagnetic actuator and parking brake valve provided with such an actuator Download PDF

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Publication number
WO2021224241A1
WO2021224241A1 PCT/EP2021/061702 EP2021061702W WO2021224241A1 WO 2021224241 A1 WO2021224241 A1 WO 2021224241A1 EP 2021061702 W EP2021061702 W EP 2021061702W WO 2021224241 A1 WO2021224241 A1 WO 2021224241A1
Authority
WO
WIPO (PCT)
Prior art keywords
actuator
axis
drive shaft
shaft
core
Prior art date
Application number
PCT/EP2021/061702
Other languages
French (fr)
Inventor
Laurent MONSAINT
Original Assignee
Safran Landing Systems
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Safran Landing Systems filed Critical Safran Landing Systems
Priority to US17/997,945 priority Critical patent/US12038098B2/en
Priority to EP21722893.1A priority patent/EP4146509B1/en
Publication of WO2021224241A1 publication Critical patent/WO2021224241A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
    • F16K31/0679—Electromagnet aspects, e.g. electric supply therefor with more than one energising coil
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/18—Safety devices; Monitoring
    • B60T17/22—Devices for monitoring or checking brake systems; Signal devices
    • B60T17/221—Procedure or apparatus for checking or keeping in a correct functioning condition of brake systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
    • B60T13/745—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive acting on a hydraulic system, e.g. a master cylinder
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1607—Armatures entering the winding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2127/00—Auxiliary mechanisms
    • F16D2127/06—Locking mechanisms, e.g. acting on actuators, on release mechanisms or on force transmission mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F2007/1669—Armatures actuated by current pulse, e.g. bistable actuators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F2007/1692—Electromagnets or actuators with two coils
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
    • H01F7/1844—Monitoring or fail-safe circuits
    • H01F2007/185—Monitoring or fail-safe circuits with armature position measurement

Definitions

  • the invention relates to the field of electromagnetic actuators and more particularly to a manually controlled bistable electromagnetic actuator, as well as to an aircraft parking brake valve comprising such an actuator.
  • an aircraft wheel brake comprises friction elements secured for some to the wheel and for others to a stator, and a brake cylinder arranged to exert on the wheels. friction elements sufficient force to block the aircraft wheel from rotating.
  • the brake cylinder is activated by a dedicated control device (referred to here as the parking brake system) and separate from the device for controlling the brake cylinder during the landing phase.
  • the parking brake system comprises a hydraulic distributor commonly called PBSELV (standing for “Park Brake Selector Valve”) or PBSOV (standing for “Park Brake Shut-off Valve”), of which a spool or a valve is generally moved by an electromechanical actuator.
  • the electromechanical actuator comprises an electric motor with a stator and a rotor, and a screw / nut assembly, one of the elements of which is rotated by the rotor and the other element is forced to slide without rotation between two positions to control the displacement of the drawer or the valve.
  • the gear formed by the screw / nut assembly is deemed to be irreversible so that this type of actuator does not allow manual control of the movement of said slide or of said valve.
  • the object of the invention is therefore to propose a linear actuator which can be controlled both electrically and manually for controlling a distributor such as that of an aircraft parking brake system.
  • a bistable electromagnetic actuator comprising:
  • a manual control device comprising a drive shaft movable in rotation about a first axis orthogonal to the force axis, the drive shaft comprising at least one tooth cooperating with at least one first relief connected in translation to the actuator so that a rotation of the drive shaft generates a translation of the movable assembly.
  • the gear formed between the movable assembly and the drive shaft is reversible.
  • the actuator can thus be moved by energizing the coil or rotating the drive shaft so that the actuator is controllable both electrically and manually.
  • the actuating member comprises a rod extending along the force axis.
  • the manual control device comprises a lever arranged at one end of the drive shaft to drive said drive shaft in rotation.
  • the actuator further comprises a copying shaft mounted to be movable in rotation about a second axis orthogonal to the force axis.
  • the copying shaft comprises a tooth cooperating with said at least one first relief or with at least one second relief of the actuating member so that a translation of the member of the movable assembly causes a rotation of the 'copy tree.
  • the actuator comprises a permanent magnet carried by the copying shaft, and a Hall effect sensor arranged to detect a magnetic field emitted by the magnet when the copying shaft is in an angular position corresponding to one of the extreme positions of the nucleus.
  • the invention also relates to an aircraft parking brake valve comprising such an actuator and a distribution element movable between two service positions.
  • the actuator is connected to the distribution element to control a movement of said distribution element between two service positions.
  • the distribution element is a valve or a drawer.
  • FIG. 1 is a perspective view of an aircraft parking brake valve comprising an actuator according to a particular embodiment of the invention
  • FIG. 2 is a sectional view of the valve illustrated in FIG. 1 along a plane passing through a force axis of the actuator
  • FIG. 3 is a simplified sectional view of the actuator illustrated in FIG. 2, in one of its stable states;
  • - Figure 4 is a view identical to Figure 3, in which the actuator is in the other of its stable states.
  • the invention relates to a bistable electromagnetic actuator, generally designated as 1, here controlling the movement of a distribution element 2 of a parking brake valve V. aircraft between two service positions.
  • the actuator 1 comprises, according to a particular embodiment of the invention, a fixed assembly generally designated by the reference 10, as well as a mobile assembly generally designated by the reference 20.
  • the fixed assembly 10 has a generally cylindrical shape around a longitudinal X axis and comprises, going from the outside to the inside, a carcass 11, a support 12 of permanent magnets, two coils 13 of electromagnetic excitation , a set of four permanent magnets 14, two end pieces 15.1, 15.2 magnetic and a tube 16 of non-magnetic material.
  • the carcass 11 is made of a ferromagnetic material and comprises a tubular body in two parts 11.1, 11.2 extending successively along the axis X. Each of the body parts 11.1, 11.2 is provided at its free end with a flange 11.3, 11.4 perpendicular to the X axis each defining an end opening of the carcass 11.
  • the two coils 13 are each housed in an internal volume of the support 12 of permanent magnets and are carried by said support to be centered on the X axis.
  • Each coil 13 comprises two respective windings 13.1.
  • the support 12 of permanent magnets keeps the coils 13 spaced apart from each other and is trapped in the body parts 11.1, 11.2.
  • the permanent magnet support 12 is made of a ferromagnetic material.
  • the permanent magnets 14 are symmetrically distributed around the X axis between the coils 13 and are glued inside the support 12 to generate a permanent magnetic flux in the absence of current in said coils 13.
  • the magnetic end pieces 15.1, 15.2 are coaxial with respect to the X axis and are positioned in the carcass 11 in contact with the coils adjacent to the longitudinal ends of said carcass 11.
  • the end piece 15.1 closes the end opening defined by the rim 11.3.
  • the end piece 15.2 includes a portion projecting from the end opening defined by the flange 11.4. Each end piece 15.1, 15.2 has a tubular shape centered on the X axis and forms a stop against the sliding of the movable assembly 20.
  • the end pieces 15.1, 15.2 are made of ferromagnetic material in order to guide the magnetic flux produced by the coils 13 and guided by the frame 11 and the support 12 of permanent magnets.
  • the tube 16 is centered on the X axis and extends between the end pieces 15.1, 15.2 inside the support 12 of permanent magnets to form a guide member of the movable assembly 20.
  • the movable assembly 20 comprises a core 21 made of ferromagnetic material and a non-magnetic rod 22 coupled to the core 21 to form an actuator.
  • the core 21 comprises a peripheral ring inside which extends radially a connecting web with the rod 22.
  • the core 21 is able to slide along the X axis inside the tube 16 between two extreme positions in which said core 21 is partially opposite the coils 13 and bears against one of the end pieces 15.1, 15.2.
  • the end pieces 15.1, 15.2 thus form stops and also make it possible to close the magnetic flux of the coils 13 towards the core 21.
  • the rod 22 has a generally cylindrical shape along the X axis. A proximal end of the rod is fixedly attached to the web. of the core 21 by a screw 23 passing through said web at its center.
  • the rod 22 is thus movable along the X axis between a retracted position ( Figure 3) and an extended position ( Figure 4) corresponding to the extreme positions of the core 21.
  • the rod 22 axially passes through an opening made in the end piece 15.2 so that a distal end of the rod 22 protrudes from the fixed assembly 10.
  • the distal end of the rod 22 comprises a connecting interface for be coupled to the distribution element 2, and is externally provided with a first groove 22.1 and a second annular groove 22.2.
  • the fixed assembly 10 of the actuator is fixedly attached to a casing C of the valve V, via a fixing interface I made of a non-magnetic material in which the carcass 11 is housed, so that the proximal end of the rod 22 extends inside a receiving volume L delimited by internal walls of the casing C.
  • the fixed assembly 10 extends in part projecting from the fixing interface, which is itself partially in protrusion of the housing C, and is capped by a cover K which is fixed to the fixing interface by projecting from the housing C.
  • the actuator 1 also comprises a manual control device 30 for manually moving the rod 22 between the retracted position and the extended position.
  • the control device comprises a drive shaft 31 movable in rotation about an axis Y1 orthogonal to the axis X.
  • the drive shaft 31 passes through a side wall of the housing C and has a projecting end at the end. exterior of the housing C.
  • the end of the drive shaft 31 is provided with a handle 32 (visible in FIG. 1) for driving the drive shaft 31 in rotation.
  • the handle 32 here commonly shaped called “butterfly", comprises two identical ears 32.1, 32.2 which extend symmetrically on either side of the axis Y1 and in a plane passing through said axis Y1.
  • the ears 32.1, 32.2 form gripping means for rotating the drive shaft 31.
  • the drive shaft 31 comprises a tooth 31.1 engaged in the first groove 22.1 of the rod 22 so that a rotation of the drive shaft 31 around the axis Y1 causes the rod 22 to slide along the X axis towards the extended position or the retracted position depending on the direction of rotation of said drive shaft 31. Since the rod 22 is integrally fixed to the core 21, a rotation of the drive shaft 31 also causes a displacement of the core 21 towards one or the other of its extreme positions.
  • the tooth 31.1 has a rounded shape and fits, when the drive shaft 31 pivots, in a cylinder centered on the axis Y1 and of diameter equal to an outer diameter of the drive shaft 31.
  • the lever 32 has an angular movement defined directly by the retracted position and the position of the rod 22, and indirectly by the extreme positions of the core 21. As illustrated in FIG. 1, this movement angular is materialized by a first line T1 followed by the inscription "ON" and by a second line T2 followed by the inscription "OFF".
  • the first line Tl corresponds to an extreme angular position of the handle 32 in which the lug 32.1 is in the extension of said first line Tl and the rod 22 is in the extended position.
  • the second line T2 corresponds to an extreme angular position of the handle 32 in which the lug 32.1 is in the extension of said second line T2 and the rod 22 is in the extended position.
  • the lever 32 thus makes it possible to have a visual indication of the position of the rod 22.
  • the actuator 1 further comprises a copying shaft 33 mounted in a wall of the casing C so as to have a movable end in rotation inside the volume L about an axis Y2 orthogonal to the axis X.
  • the axes Yl, Y2 are parallel.
  • the copying shaft 33 and the drive shaft 31 extend on either side of the rod 22.
  • the end of the copying shaft 33 comprises a tooth 33.1 engaged in the second groove 22.2 of the rod 22 so that sliding of the rod 22 along the X axis causes the copying shaft 33 to rotate around of the Y2 axis.
  • the tooth 33.1 has a rounded shape and fits, during the rotation of the copying shaft 33, in a cylinder centered on the Y2 axis and of diameter equal to an outer diameter of the copying shaft 33.
  • a permanent magnet 34 is fixed on an outer surface of the copying shaft 33 which is opposite to the tooth 33.1, and a Hall effect sensor 35 is arranged inside the housing C so that the sensor 35 detects a magnetic field emitted by the magnet 34 when the copying shaft 33 is in an angular position corresponding to the extended position of the rod 22.
  • the sensor 35 is connected to an electronic unit (not shown here) allowing, for example , to go up to the level of the cockpit of the aircraft information relating to the position of the rod 22, and therefore to a state of the valve V.
  • one of the two electromagnetic coils 13 is supplied electrically so as to generate a magnetic field of attraction for the core 21.
  • the other electromagnetic coil 13 n is not electrically powered.
  • the magnetic field generated by the coil 13 produces a magnetic flux which is guided by the ferromagnetic parts of the actuator 1.
  • the magnetic flux forms a loop and successively passes through the end piece 15.1, 15.2 in contact with the electrically supplied coil 13, the part 11.1, 11.2 of the frame 11 in contact with said end piece 15.1, 15.2, the permanent magnet support
  • the core 21 then moves inside the tube 16 and is pressed against the corresponding end piece 15.1, 15.2 of the fixed assembly 10. The core 21 is then spaced apart from the other end 15.1, 15.2.
  • the passage of the core 21 towards one or the other of its extreme positions generates a sliding of the rod 22 towards the retracted position or the extended position, and therefore a displacement of the distribution element 2 of the valve V between two positions in service.
  • the sliding of the rod 22 in turn causes a rotation of the drive shaft 31 and a rotation of the copying shaft 33.
  • the angular position of the copying shaft 33 is such that the permanent magnet 34 is opposite the sensor 35.
  • the sensor 35 detects the magnetic field emitted by the magnet 34 , which allows the electronic unit to inform the pilot of the aircraft that the valve V is in a state corresponding to the extended position of the rod 22.
  • the angular position of the copying shaft 33 is such that the permanent magnet 34 is not opposite the sensor 35.
  • the sensor 35 then does not detect the magnetic field emitted. by magnet 34.
  • the drive shaft 31 and the copying shaft 33 do not necessarily extend parallel to one another.
  • drive shaft 31 and the copying shaft 33 are understood to be on either side of the rod 22, they can also extend on the same side of the rod 22.
  • the tooth 31.1 of the drive shaft 31 and the tooth 33.1 of the copying shaft 33 can be engaged in one and the same groove 22.1.
  • the distribution element 2 can for example be a valve or a slide.
  • the shape and dimensions of the rod 22 may be different from that described and illustrated.
  • Each of the grooves can be replaced by at least one relief.
  • a rack can be provided on the rod 22 and toothed wheels on the drive shaft and the copying shaft.
  • Each of the grooves can be made on the actuating member, the core or any other part linked in translation to the actuating member.
  • the drive shaft can itself be provided with a magnet to also act as a copying shaft.
  • the invention can be used for any type of actuator regardless of the device actuated.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Power Engineering (AREA)
  • Magnetically Actuated Valves (AREA)
  • Electromagnets (AREA)
  • Braking Arrangements (AREA)

Abstract

The invention relates to a bistable electromagnetic actuator (1) comprising a housing (11) extending along an axis of exertion (X) of the actuator, two excitation coils (13) arranged inside the housing and comprising at least one winding (13.1) around the axis of exertion for generating a magnetic control flux, a core (21) that can be moved along the axis of exertion and immobilised in two end positions depending on the magnetic flux generated by the coils, an actuating member (22) coupled to the core to form a movable assembly (20), and a manual control device (30) comprising a drive shaft (31) mounted such that it can rotate about a first axis (Y1) orthogonal to the axis of exertion. According to the invention, the drive shaft comprises at least one tooth (31.1) engaging with at least one first raised part (22.1) translationally connected to the actuating member such that rotation of the drive generates translational movement of the mobile assembly.

Description

ACTIONNEUR ELECTROMAGNETIQUE A COMMANDE MANUELLE ET VALVE DE FREIN DE PARKING EQUIPEE D' UN TEL ACTIONNEURMANUAL CONTROL ELECTROMAGNETIC ACTUATOR AND PARKING BRAKE VALVE EQUIPPED WITH SUCH ACTUATOR
L'invention concerne le domaine des actionneurs électromagnétiques et plus particulièrement un actionneur électromagnétique bistable à commande manuelle, ainsi qu'une valve de frein de parking d'aéronef comprenant un tel actionneur. The invention relates to the field of electromagnetic actuators and more particularly to a manually controlled bistable electromagnetic actuator, as well as to an aircraft parking brake valve comprising such an actuator.
ARRIERE PLAN DE L'INVENTION D'une manière générale, un frein de roue d'aéronef comporte des éléments de friction solidaires pour certains de la roue et pour d'autres d'un stator, et un vérin de frein agencé pour exercer sur les éléments de friction un effort suffisant pour bloquer en rotation la roue d'aéronef. Au parking, le vérin de frein est activé par un dispositif de commande dédié (appelé ici système de frein de parking) et distinct du dispositif de commande du vérin de frein en phase d'atterrissage. Le système de frein de parking comporte un distributeur hydraulique communément appelé PBSELV (de l'anglais « Park Brake Selector Valve ») ou PBSOV (de l'anglais « Park Brake Shut-off Valve »), dont un tiroir ou un clapet est généralement déplacé par un actionneur électromécanique. BACKGROUND OF THE INVENTION In general, an aircraft wheel brake comprises friction elements secured for some to the wheel and for others to a stator, and a brake cylinder arranged to exert on the wheels. friction elements sufficient force to block the aircraft wheel from rotating. When parking, the brake cylinder is activated by a dedicated control device (referred to here as the parking brake system) and separate from the device for controlling the brake cylinder during the landing phase. The parking brake system comprises a hydraulic distributor commonly called PBSELV (standing for “Park Brake Selector Valve”) or PBSOV (standing for “Park Brake Shut-off Valve”), of which a spool or a valve is generally moved by an electromechanical actuator.
L'actionneur électromécanique comprend un moteur électrique avec un stator et un rotor, et un ensemble vis/écrou dont l'un des éléments est entraîné en rotation par le rotor et l'autre élément est astreint à coulisser sans rotation entre deux positions pour commander le déplacement du tiroir ou du clapet. L'engrenage formé par l'ensemble vis/écrou est réputé irréversible de sorte que ce type d'actionneur ne permet pas de commander manuellement le déplacement dudit tiroir ou dudit clapet. Or, pour des raisons de maintenance, il serait intéressant de pouvoir commander le distributeur PBSELV / PBSOV en l'absence d'électricité. Il serait par ailleurs intéressant de pouvoir commander manuellement le frein de parking en cas de panne électrique ou de dysfonctionnement électronique. The electromechanical actuator comprises an electric motor with a stator and a rotor, and a screw / nut assembly, one of the elements of which is rotated by the rotor and the other element is forced to slide without rotation between two positions to control the displacement of the drawer or the valve. The gear formed by the screw / nut assembly is deemed to be irreversible so that this type of actuator does not allow manual control of the movement of said slide or of said valve. Now, for maintenance reasons, it would be interesting to be able to control the PBSELV / PBSOV distributor in the absence of electricity. It would also be advantageous to be able to manually control the parking brake in the event of an electrical failure or electronic malfunction.
OBJET DE L'INVENTION L'invention a donc pour objet de proposer un actionneur linéaire commandable à la fois électriquement et manuellement pour piloter un distributeur tel que celui d'un système de frein de parking d'aéronef. OBJECT OF THE INVENTION The object of the invention is therefore to propose a linear actuator which can be controlled both electrically and manually for controlling a distributor such as that of an aircraft parking brake system.
RESUME DE L’INVENTION A cet effet, on prévoit, selon l'invention, un actionneur électromagnétique bistable comprenant : SUMMARY OF THE INVENTION For this purpose, there is provided, according to the invention, a bistable electromagnetic actuator comprising:
- une carcasse s'étendant suivant un axe d'effort de 1'actionneur, - a carcass extending along a force axis of the actuator,
- deux bobines d'excitation disposées à l'intérieur de la carcasse et comportant au moins un enroulement autour de l'axe d'effort pour générer un flux magnétique de commande, - two excitation coils arranged inside the casing and comprising at least one winding around the force axis to generate a magnetic control flux,
- un noyau mobile suivant l'axe d'effort et apte à être immobilisé selon deux positions extrêmes en fonction du flux magnétique généré par les bobines, - a mobile core along the force axis and able to be immobilized in two extreme positions depending on the magnetic flux generated by the coils,
- un organe d'actionnement couplé au noyau pour former un ensemble mobile, et - an actuator coupled to the core to form a mobile assembly, and
- un dispositif de commande manuelle comportant un arbre d'entraînement mobile en rotation autour d'un premier axe orthogonal à l'axe d'effort, l'arbre d'entraînement comportant au moins une dent coopérant avec au moins un premier relief lié en translation à l'organe d'actionnement de sorte qu'une rotation de l'arbre d'entraînement engendre une translation de l'ensemble mobile. a manual control device comprising a drive shaft movable in rotation about a first axis orthogonal to the force axis, the drive shaft comprising at least one tooth cooperating with at least one first relief connected in translation to the actuator so that a rotation of the drive shaft generates a translation of the movable assembly.
L'engrenage formé entre l'ensemble mobile et l'arbre d'entraînement est réversible. L'organe d'actionnement peut ainsi être déplacé par une excitation de la bobine ou une rotation de l'arbre d'entraînement de sorte que l'actionneur est commandable à la fois électriquement et manuellement. The gear formed between the movable assembly and the drive shaft is reversible. The actuator can thus be moved by energizing the coil or rotating the drive shaft so that the actuator is controllable both electrically and manually.
De manière particulière, l'organe d'actionnement comprend une tige s'étendant suivant l'axe d'effort. Selon une caractéristique particulière, le dispositif de commande manuelle comprend une manette agencée à une extrémité de l'arbre d'entraînement pour entraîner en rotation ledit arbre d'entraînement. In particular, the actuating member comprises a rod extending along the force axis. According to one particular characteristic, the manual control device comprises a lever arranged at one end of the drive shaft to drive said drive shaft in rotation.
Selon une autre caractéristique particulière, l'actionneur comprend en outre un arbre de recopie monté mobile en rotation autour d'un deuxième axe orthogonal à l'axe d'effort. L'arbre de recopie comporte une dent coopérant avec ledit au moins un premier relief ou avec au moins un deuxième relief de l'organe d'actionnement de sorte qu'une translation de l'organe de l'ensemble mobile entraîne une rotation de l'arbre de recopie. According to another particular characteristic, the actuator further comprises a copying shaft mounted to be movable in rotation about a second axis orthogonal to the force axis. The copying shaft comprises a tooth cooperating with said at least one first relief or with at least one second relief of the actuating member so that a translation of the member of the movable assembly causes a rotation of the 'copy tree.
De manière particulière alors, l'actionneur comporte un aimant permanent porté par l'arbre de recopie, et un capteur à effet Hall agencé pour détecter un champ magnétique émis par l'aimant lorsque l'arbre de recopie est dans une position angulaire correspondant à l'une des positions extrêmes du noyau. In particular then, the actuator comprises a permanent magnet carried by the copying shaft, and a Hall effect sensor arranged to detect a magnetic field emitted by the magnet when the copying shaft is in an angular position corresponding to one of the extreme positions of the nucleus.
L'invention concerne également une valve de frein de parking d'aéronef comprenant un tel actionneur et un élément de distribution mobile entre deux positions de service. L'organe d'actionnement est relié à l'élément de distribution pour commander un déplacement dudit élément de distribution entre deux positions de service. The invention also relates to an aircraft parking brake valve comprising such an actuator and a distribution element movable between two service positions. The actuator is connected to the distribution element to control a movement of said distribution element between two service positions.
De manière particulière, l'élément de distribution est un clapet ou un tiroir. In particular, the distribution element is a valve or a drawer.
BREVE DESCRIPTION DES DESSINS L'invention sera mieux comprise à la lumière de la description qui suit, laquelle est purement illustrative et non limitative, et doit être lue en regard des dessins annexés, parmi lesquels : - la figure 1 est une vue en perspective d'une valve de frein de parking d'aéronef comprenant un actionneur selon un mode de réalisation particulier de l'invention ; la figure 2 est une vue en coupe de la valve illustrée à la figure 1 selon un plan passant par un axe d'effort de l'actionneur ; BRIEF DESCRIPTION OF THE DRAWINGS The invention will be better understood in the light of the following description, which is purely illustrative and not limiting, and should be read with reference to the accompanying drawings, among which: - Figure 1 is a perspective view of an aircraft parking brake valve comprising an actuator according to a particular embodiment of the invention; FIG. 2 is a sectional view of the valve illustrated in FIG. 1 along a plane passing through a force axis of the actuator;
- la figure 3 est une vue en coupe simplifiée de 1'actionneur illustré à la figure 2, dans un de ses états stables ; - la figure 4 est une vue identique à la figure 3, dans laquelle l'actionneur est dans l'autre de ses états stables. FIG. 3 is a simplified sectional view of the actuator illustrated in FIG. 2, in one of its stable states; - Figure 4 is a view identical to Figure 3, in which the actuator is in the other of its stable states.
DESCRIPTION DETAILLEE DE L'INVENTION En référence aux figures 1 et 2, l'invention concerne un actionneur électromagnétique bistable, généralement désigné en 1, commandant ici le déplacement d'un élément de distribution 2 d'une valve V de frein de parking d'aéronef entre deux positions de service. DETAILED DESCRIPTION OF THE INVENTION With reference to Figures 1 and 2, the invention relates to a bistable electromagnetic actuator, generally designated as 1, here controlling the movement of a distribution element 2 of a parking brake valve V. aircraft between two service positions.
L'actionneur 1 comprend, selon un mode de réalisation particulier de l'invention, un ensemble fixe désigné de façon générale par la référence 10, ainsi qu'un ensemble mobile désigné de façon générale par la référence 20. The actuator 1 comprises, according to a particular embodiment of the invention, a fixed assembly generally designated by the reference 10, as well as a mobile assembly generally designated by the reference 20.
L'ensemble fixe 10 a une forme globalement cylindrique autour d'un axe X longitudinal et comprend, en allant de l'extérieur vers l'intérieur, une carcasse 11, un support 12 d'aimants permanents, deux bobines 13 d'excitation électromagnétiques, un ensemble de quatre aimants permanents 14, deux embouts 15.1, 15.2 magnétiques et un tube 16 en matériau non magnétique. La carcasse 11 est réalisée en matériau ferromagnétique et comporte un corps tubulaire en deux parties 11.1, 11.2 s'étendant successivement suivant l'axe X. Chacune des parties 11.1, 11.2 de corps est pourvue à son extrémité libre d'un rebord 11.3, 11.4 perpendiculaire à l'axe X définissant chacun une ouverture d'extrémité de la carcasse 11. The fixed assembly 10 has a generally cylindrical shape around a longitudinal X axis and comprises, going from the outside to the inside, a carcass 11, a support 12 of permanent magnets, two coils 13 of electromagnetic excitation , a set of four permanent magnets 14, two end pieces 15.1, 15.2 magnetic and a tube 16 of non-magnetic material. The carcass 11 is made of a ferromagnetic material and comprises a tubular body in two parts 11.1, 11.2 extending successively along the axis X. Each of the body parts 11.1, 11.2 is provided at its free end with a flange 11.3, 11.4 perpendicular to the X axis each defining an end opening of the carcass 11.
Les deux bobines 13 sont chacune logées dans un volume interne du support 12 d'aimants permanents et sont portées par ledit support pour être centrées sur l'axe X. Chaque bobine 13 comprend deux enroulements 13.1 respectifs. The two coils 13 are each housed in an internal volume of the support 12 of permanent magnets and are carried by said support to be centered on the X axis. Each coil 13 comprises two respective windings 13.1.
Le support 12 d'aimants permanents maintient les bobines 13 espacées l'une de l'autre et est prisonnier des parties de corps 11.1, 11.2. Le support d'aimants permanents 12 est réalisée en matériau ferromagnétique. The support 12 of permanent magnets keeps the coils 13 spaced apart from each other and is trapped in the body parts 11.1, 11.2. The permanent magnet support 12 is made of a ferromagnetic material.
Les aimants permanents 14 sont symétriquement répartis autour de l'axe X entre les bobines 13 et sont collés à l'intérieur du support 12 pour générer un flux magnétique permanent en l'absence de courant dans lesdites bobines 13. The permanent magnets 14 are symmetrically distributed around the X axis between the coils 13 and are glued inside the support 12 to generate a permanent magnetic flux in the absence of current in said coils 13.
Les embouts 15.1, 15.2 magnétiques sont coaxiaux par rapport à l'axe X et sont positionnés dans la carcasse 11 au contact des bobines voisines des extrémités longitudinales de ladite carcasse 11. L'embout 15.1 obture l'ouverture d'extrémité définie par le rebord 11.3.The magnetic end pieces 15.1, 15.2 are coaxial with respect to the X axis and are positioned in the carcass 11 in contact with the coils adjacent to the longitudinal ends of said carcass 11. The end piece 15.1 closes the end opening defined by the rim 11.3.
L'embout 15.2 comprend une partie s'étendant en saillie de l'ouverture d'extrémité définie par le rebord 11.4. Chaque embout 15.1, 15.2 présente une forme tubulaire centrée sur l'axe X et forme une butée au coulissement de l'ensemble mobile 20. Les embouts 15.1, 15.2 sont réalisés en matériau ferromagnétique afin de guider le flux magnétique produit par les bobines 13 et guidé par la carcasse 11 et le support 12 d'aimants permanents. The end piece 15.2 includes a portion projecting from the end opening defined by the flange 11.4. Each end piece 15.1, 15.2 has a tubular shape centered on the X axis and forms a stop against the sliding of the movable assembly 20. The end pieces 15.1, 15.2 are made of ferromagnetic material in order to guide the magnetic flux produced by the coils 13 and guided by the frame 11 and the support 12 of permanent magnets.
Le tube 16 est centré sur l'axe X et s'étend entre les embouts 15.1, 15.2 à l'intérieur du support 12 d'aimants permanents pour former un organe de guidage de l'ensemble mobile 20. The tube 16 is centered on the X axis and extends between the end pieces 15.1, 15.2 inside the support 12 of permanent magnets to form a guide member of the movable assembly 20.
L'ensemble mobile 20 comprend un noyau 21 réalisé en matériau ferromagnétique et une tige 22 non magnétique couplée au noyau 21 pour former un organe d'actionnement. Le noyau 21 comprend un anneau périphérique à l'intérieur duquel s'étend radialement un voile de liaison avec la tige 22. Le noyau 21 est apte à coulisser suivant l'axe X à l'intérieur du tube 16 entre deux positions extrêmes dans lesquelles ledit noyau 21 est partiellement en regard des bobines 13 et est en appui contre l'un des embouts 15.1, 15.2. Les embouts 15.1, 15.2 forment ainsi des butées et permettent également de refermer le flux magnétique des bobines 13 vers le noyau 21. La tige 22 présente une forme globalement cylindrique suivant l'axe X. Une extrémité proximale de la tige est fixée solidairement au voile du noyau 21 par une vis 23 traversant ledit voile en son centre. La tige 22 est ainsi mobile suivant l'axe X entre une position rétractée (figure 3) et une position sortie (figure 4) correspondants aux positions extrêmes du noyau 21. The movable assembly 20 comprises a core 21 made of ferromagnetic material and a non-magnetic rod 22 coupled to the core 21 to form an actuator. The core 21 comprises a peripheral ring inside which extends radially a connecting web with the rod 22. The core 21 is able to slide along the X axis inside the tube 16 between two extreme positions in which said core 21 is partially opposite the coils 13 and bears against one of the end pieces 15.1, 15.2. The end pieces 15.1, 15.2 thus form stops and also make it possible to close the magnetic flux of the coils 13 towards the core 21. The rod 22 has a generally cylindrical shape along the X axis. A proximal end of the rod is fixedly attached to the web. of the core 21 by a screw 23 passing through said web at its center. The rod 22 is thus movable along the X axis between a retracted position (Figure 3) and an extended position (Figure 4) corresponding to the extreme positions of the core 21.
La tige 22 traverse axialement une ouverture pratiquée dans l'embout 15.2 de sorte qu'une extrémité distale de la tige 22 s'étend en saillie de l'ensemble fixe 10. L'extrémité distale de la tige 22 comporte une interface de liaison pour être couplée à l'élément de distribution 2, et est extérieurement pourvue d'une première gorge 22.1 et une deuxième gorge 22.2 annulaires. The rod 22 axially passes through an opening made in the end piece 15.2 so that a distal end of the rod 22 protrudes from the fixed assembly 10. The distal end of the rod 22 comprises a connecting interface for be coupled to the distribution element 2, and is externally provided with a first groove 22.1 and a second annular groove 22.2.
L'ensemble fixe 10 de l'actionneur est fixé solidairement à un carter C de la valve V, via une interface de fixation I réalisée en matériau non magnétique dans laquelle la carcasse 11 est logée, de sorte que l'extrémité proximale de la tige 22 s'étende à l'intérieur d'un volume L de réception délimité par des parois internes du carter C. L'ensemble fixe 10 s'étend en partie en saillie de l'interface de fixation, qui est elle-même partiellement en saillie du carter C, et est coiffé par un capot K qui est fixé à l'interface de fixation en s'étendant en saillie du carter C. L'actionneur 1 comprend également un dispositif de commande manuelle 30 pour déplacer manuellement la tige 22 entre la position rétractée et la position sortie. Le dispositif de commande comporte un arbre d'entraînement 31 mobile en rotation autour d'un axe Y1 orthogonal à l'axe X. L'arbre d'entraînement 31 traverse une paroi latérale du carter C et possède une extrémité en saillie à l'extérieur du carter C. L'extrémité de l'arbre d'entraînement 31 est pourvue d'une manette 32 (visible sur la figure 1) pour entraîner en rotation l'arbre d'entraînement 31. La manette 32, ici de forme couramment nommée « papillon », comprend deux oreilles 32.1, 32.2 identiques qui s'étendent symétriquement de part et d'autre de l'axe Y1 et dans un plan passant par ledit axe Y1. Les oreilles 32.1, 32.2 forment des moyens de préhension pour entraîner en rotation l'arbre d'entraînement 31. The fixed assembly 10 of the actuator is fixedly attached to a casing C of the valve V, via a fixing interface I made of a non-magnetic material in which the carcass 11 is housed, so that the proximal end of the rod 22 extends inside a receiving volume L delimited by internal walls of the casing C. The fixed assembly 10 extends in part projecting from the fixing interface, which is itself partially in protrusion of the housing C, and is capped by a cover K which is fixed to the fixing interface by projecting from the housing C. The actuator 1 also comprises a manual control device 30 for manually moving the rod 22 between the retracted position and the extended position. The control device comprises a drive shaft 31 movable in rotation about an axis Y1 orthogonal to the axis X. The drive shaft 31 passes through a side wall of the housing C and has a projecting end at the end. exterior of the housing C. The end of the drive shaft 31 is provided with a handle 32 (visible in FIG. 1) for driving the drive shaft 31 in rotation. The handle 32, here commonly shaped called "butterfly", comprises two identical ears 32.1, 32.2 which extend symmetrically on either side of the axis Y1 and in a plane passing through said axis Y1. The ears 32.1, 32.2 form gripping means for rotating the drive shaft 31.
Comme cela est visible sur la figure 2, l'arbre d'entraînement 31 comprend une dent 31.1 engagée dans la première gorge 22.1 de la tige 22 de sorte qu'une rotation de l'arbre d'entraînement 31 autour de l'axe Y1 entraîne un coulissement de la tige 22 suivant l'axe X vers la position sortie ou la position rétractée en fonction du sens de la rotation dudit arbre d'entraînement 31. Puisque la tige 22 est solidairement fixée au noyau 21, une rotation de l'arbre d'entraînement 31 provoque également un déplacement du noyau 21 vers l'une ou l'autre de ses positions extrêmes. As can be seen in Figure 2, the drive shaft 31 comprises a tooth 31.1 engaged in the first groove 22.1 of the rod 22 so that a rotation of the drive shaft 31 around the axis Y1 causes the rod 22 to slide along the X axis towards the extended position or the retracted position depending on the direction of rotation of said drive shaft 31. Since the rod 22 is integrally fixed to the core 21, a rotation of the drive shaft 31 also causes a displacement of the core 21 towards one or the other of its extreme positions.
La dent 31.1 a une forme arrondie et s'inscrit, lorsque l'arbre d'entrainement 31 pivote, dans un cylindre centré sur l'axe Y1 et de diamètre égal à un diamètre extérieur de l'arbre d'entraînement 31. The tooth 31.1 has a rounded shape and fits, when the drive shaft 31 pivots, in a cylinder centered on the axis Y1 and of diameter equal to an outer diameter of the drive shaft 31.
La manette 32 a un débattement angulaire défini directement par la position rétractée et la position de la tige 22, et indirectement par les positions extrêmes du noyau 21. Comme illustré sur la figure 1, ce débattement angulaire est matérialisé par un premier trait Tl suivi de l'inscription « ON » et par un deuxième trait T2 suivi de l'inscription « OFF ». Le premier trait Tl correspond à une position angulaire extrême de la manette 32 dans laquelle l'oreille 32.1 est dans le prolongement dudit premier trait Tl et la tige 22 est dans la position sortie. Le deuxième trait T2 correspond à une position angulaire extrême de la manette 32 dans laquelle l'oreille 32.1 est dans le prolongement dudit deuxième trait T2 et la tige 22 est dans la position sortie. La manette 32 permet ainsi d'avoir une indication visuelle sur la position de la tige 22. The lever 32 has an angular movement defined directly by the retracted position and the position of the rod 22, and indirectly by the extreme positions of the core 21. As illustrated in FIG. 1, this movement angular is materialized by a first line T1 followed by the inscription "ON" and by a second line T2 followed by the inscription "OFF". The first line Tl corresponds to an extreme angular position of the handle 32 in which the lug 32.1 is in the extension of said first line Tl and the rod 22 is in the extended position. The second line T2 corresponds to an extreme angular position of the handle 32 in which the lug 32.1 is in the extension of said second line T2 and the rod 22 is in the extended position. The lever 32 thus makes it possible to have a visual indication of the position of the rod 22.
L'actionneur 1 comprend en outre un arbre de recopie 33 monté dans une paroi du carter C pour avoir une extrémité mobile en rotation à l'intérieur du volume L autour d'un axe Y2 orthogonal à l'axe X. Les axes Yl, Y2 sont parallèles. L'arbre de recopie 33 et l'arbre d'entraînement 31 s'étendent de part et d'autre de la tige 22. The actuator 1 further comprises a copying shaft 33 mounted in a wall of the casing C so as to have a movable end in rotation inside the volume L about an axis Y2 orthogonal to the axis X. The axes Yl, Y2 are parallel. The copying shaft 33 and the drive shaft 31 extend on either side of the rod 22.
L'extrémité de l'arbre de recopie 33 comporte une dent 33.1 engagée dans la deuxième gorge 22.2 de la tige 22 de sorte qu'un coulissement de la tige 22 selon l'axe X entraîne une rotation de l'arbre de recopie 33 autour de l'axe Y2. La dent 33.1 a une forme arrondie et s'inscrit, lors de la rotation de l'arbre de recopie 33, dans un cylindre centré sur l'axe Y2 et de diamètre égal à un diamètre extérieur de l'arbre de recopie 33. The end of the copying shaft 33 comprises a tooth 33.1 engaged in the second groove 22.2 of the rod 22 so that sliding of the rod 22 along the X axis causes the copying shaft 33 to rotate around of the Y2 axis. The tooth 33.1 has a rounded shape and fits, during the rotation of the copying shaft 33, in a cylinder centered on the Y2 axis and of diameter equal to an outer diameter of the copying shaft 33.
Par ailleurs, un aimant 34 permanent est fixé sur une surface externe de l'arbre de recopie 33 qui est opposée à la dent 33.1, et un capteur 35 à effet Hall est agencé à l'intérieur du carter C de sorte que le capteur 35 détecte un champ magnétique émis par l'aimant 34 lorsque l'arbre de recopie 33 est dans une position angulaire correspondant à la position sortie de la tige 22. Le capteur 35 est relié à une unité électronique (non représentée ici) permettant, par exemple, de remonter au niveau du cockpit de l'aéronef une information relative à la position de la tige 22, et donc à un état de la valve V. On the other hand, a permanent magnet 34 is fixed on an outer surface of the copying shaft 33 which is opposite to the tooth 33.1, and a Hall effect sensor 35 is arranged inside the housing C so that the sensor 35 detects a magnetic field emitted by the magnet 34 when the copying shaft 33 is in an angular position corresponding to the extended position of the rod 22. The sensor 35 is connected to an electronic unit (not shown here) allowing, for example , to go up to the level of the cockpit of the aircraft information relating to the position of the rod 22, and therefore to a state of the valve V.
Le fonctionnement de l'actionneur va maintenant être décrit. Pour déplacer le noyau 21 vers l'une ou l'autre de ses positions extrêmes, l'une des deux bobines 13 électromagnétiques est alimentée électriquement de manière à générer un champ magnétique d'attraction du noyau 21. L'autre bobine 13 électromagnétique n'est pas alimentée électriquement. The operation of the actuator will now be described. In order to move the core 21 to one or the other of its extreme positions, one of the two electromagnetic coils 13 is supplied electrically so as to generate a magnetic field of attraction for the core 21. The other electromagnetic coil 13 n is not electrically powered.
Le champ magnétique généré par la bobine 13 produit un flux magnétique qui est guidé par les parties ferromagnétiques de l'actionneur 1. Le flux magnétique forme une boucle et traverse successivement l'embout 15.1, 15.2 au contact de la bobine 13 alimentée électriquement, la partie 11.1, 11.2 de la carcasse 11 en contact avec ledit embout 15.1, 15.2, le support d'aimants permanentsThe magnetic field generated by the coil 13 produces a magnetic flux which is guided by the ferromagnetic parts of the actuator 1. The magnetic flux forms a loop and successively passes through the end piece 15.1, 15.2 in contact with the electrically supplied coil 13, the part 11.1, 11.2 of the frame 11 in contact with said end piece 15.1, 15.2, the permanent magnet support
12, les aimants permanents 14 et le noyau 21. Le noyau 21 se déplace alors à l'intérieur du tube 16 et est plaqué contre l'embout 15.1, 15.2 correspondant de l'ensemble fixe 10. Le noyau 21 se trouve alors écarté de l'autre embout 15.1, 15.2. 12, the permanent magnets 14 and the core 21. The core 21 then moves inside the tube 16 and is pressed against the corresponding end piece 15.1, 15.2 of the fixed assembly 10. The core 21 is then spaced apart from the other end 15.1, 15.2.
Le passage du noyau 21 vers l'une ou l'autre de ses positions extrêmes engendre un coulissement de la tige 22 vers la position rétractée ou la position sortie, et donc un déplacement de l'élément de distribution 2 de la valve V entre deux positions en service. Le coulissement de la tige 22 entraîne à son tour une rotation de l'arbre d'entraînement 31 et une rotation de l'arbre de recopie 33. The passage of the core 21 towards one or the other of its extreme positions generates a sliding of the rod 22 towards the retracted position or the extended position, and therefore a displacement of the distribution element 2 of the valve V between two positions in service. The sliding of the rod 22 in turn causes a rotation of the drive shaft 31 and a rotation of the copying shaft 33.
Lorsque que la tige 22 est dans la position sortie, la position angulaire de l'arbre de recopie 33 est telle que l'aimant 34 permanent est en regard du capteur 35. Le capteur 35 détecte alors le champ magnétique émis par l'aimant 34, ce qui permet à l'unité électronique d'informer le pilote de l'aéronef que la valve V est dans un état correspondant à la position sortie de la tige 22. When the rod 22 is in the extended position, the angular position of the copying shaft 33 is such that the permanent magnet 34 is opposite the sensor 35. The sensor 35 then detects the magnetic field emitted by the magnet 34 , which allows the electronic unit to inform the pilot of the aircraft that the valve V is in a state corresponding to the extended position of the rod 22.
Lorsque que la tige 22 est dans sa position rétractée, la position angulaire de l'arbre de recopie 33 est telle que l'aimant 34 permanent n'est pas en regard du capteur 35. Le capteur 35 ne détecte alors pas le champ magnétique émis par l'aimant 34. When the rod 22 is in its retracted position, the angular position of the copying shaft 33 is such that the permanent magnet 34 is not opposite the sensor 35. The sensor 35 then does not detect the magnetic field emitted. by magnet 34.
Il est aussi possible de commander manuellement le déplacement de l'élément de distribution 2 en tournant la manette 32 de façon à réaliser une rotation de l'arbre d'entraînement 31. La rotation de l'arbre d'entraînement 31 engendre un coulissement de la tige 22 vers la position sortie ou la position rétractée en fonction du sens de la rotation de la manette 32, ce qui entraîne un coulissement de l'élément de distribution 2 selon l'axe X vers l'une ou l'autre de ses positions de service. It is also possible to manually control the movement of the distribution element 2 by turning the handle 32 so as to perform a rotation of the drive shaft 31. The rotation of the drive shaft 31 causes a sliding of the rod 22 towards the extended position or the retracted position depending on the direction of rotation of the lever 32, which causes the distribution element 2 to slide along the X axis towards one or the other of its service positions.
Bien entendu, l'invention n'est pas limitée aux modes de réalisation décrits mais englobe toute variante entrant dans le champ de l'invention telle que définie par les revendications. Of course, the invention is not limited to the embodiments described but encompasses any variant coming within the scope of the invention as defined by the claims.
L'arbre d'entrainement 31 et l'arbre de recopie 33 ne s'étendent pas forcément parallèlement l'un par rapport 1'autre. The drive shaft 31 and the copying shaft 33 do not necessarily extend parallel to one another.
Bien qu'ici l'arbre d'entrainement 31 et l'arbre de recopie 33 s'entendent de part et d'autre de la tige 22, ils peuvent aussi s'étendre du même côté de la tige 22. Although here the drive shaft 31 and the copying shaft 33 are understood to be on either side of the rod 22, they can also extend on the same side of the rod 22.
La dent 31.1 de l'arbre d'entraînement 31 et la dent 33.1 de l'arbre de recopie 33 peuvent être engagées dans une seule et même gorge 22.1. L'élément de distribution 2 peut par exemple être un clapet ou un tiroir. The tooth 31.1 of the drive shaft 31 and the tooth 33.1 of the copying shaft 33 can be engaged in one and the same groove 22.1. The distribution element 2 can for example be a valve or a slide.
La forme et les dimensions de la tige 22 peuvent être différentes de celle décrites et illustrées. The shape and dimensions of the rod 22 may be different from that described and illustrated.
Chacune des gorges peut être remplacée par au moins un relief. On peut par exemple prévoir une crémaillère sur la tige 22 et des roues dentées sur l'arbre d'entraînement et l'arbre de recopie. Each of the grooves can be replaced by at least one relief. For example, a rack can be provided on the rod 22 and toothed wheels on the drive shaft and the copying shaft.
Chacune des gorges peut être ménagée sur l'organe d'actionnement, le noyau ou tout autre pièce liée en translation à l'organe d'actionnement. Each of the grooves can be made on the actuating member, the core or any other part linked in translation to the actuating member.
L'arbre d'entraînement peut lui-même être pourvu d'un aimant pour faire office également d'arbre de recopie. The drive shaft can itself be provided with a magnet to also act as a copying shaft.
L'invention est utilisable pour tout type d'actionneur quel que soit le dispositif actionné. The invention can be used for any type of actuator regardless of the device actuated.

Claims

REVENDICATIONS
1. Actionneur (1) électromagnétique bistable comprenant : 1. Bistable electromagnetic actuator (1) comprising:
- une carcasse (11) s'étendant suivant un axe d'effort (X) de l'actionneur ; - a frame (11) extending along a force axis (X) of the actuator;
- deux bobines (13) d'excitation disposées à l'intérieur de la carcasse et comportant chacune au moins un enroulement (13.1) autour de l'axe d'effort pour générer un flux magnétique de commande ; - two excitation coils (13) arranged inside the carcass and each comprising at least one winding (13.1) around the force axis to generate a magnetic control flux;
- un noyau (21) mobile suivant l'axe d'effort et apte à être immobilisé selon deux positions extrêmes en fonction du flux magnétique généré par les bobines ; - a core (21) movable along the force axis and able to be immobilized in two extreme positions depending on the magnetic flux generated by the coils;
- un organe d'actionnement (22) couplé au noyau pour former un ensemble mobile (20) ; et - an actuator (22) coupled to the core to form a movable assembly (20); and
- un dispositif de commande (30) manuelle comportant un arbre d'entraînement (31) mobile en rotation autour d'un premier axe (Yl) orthogonal à l'axe d'effort, l'arbre d'entraînement comportant au moins une dent (31.1) coopérant avec au moins un premier relief (22.1) lié en translation à l'organe d'actionnement de sorte qu'une rotation de l'arbre d'entraînement engendre une translation de l'ensemble mobile. - a manual control device (30) comprising a drive shaft (31) movable in rotation about a first axis (Yl) orthogonal to the force axis, the drive shaft comprising at least one tooth (31.1) cooperating with at least a first relief (22.1) linked in translation to the actuating member so that a rotation of the drive shaft generates a translation of the movable assembly.
2. Actionneur (1) selon la revendication 1, dans lequel l'organe d'actionnement comprend une tige s'étendant suivant l'axe d'effort. 2. Actuator (1) according to claim 1, wherein the actuator comprises a rod extending along the axis of force.
3. Actionneur (1) selon l'une quelconque des revendications précédentes, dans lequel le dispositif de commande (30) comprend une manette (32) agencée à une extrémité de l'arbre d'entraînement (31) pour entraîner en rotation ledit arbre d'entraînement. 3. Actuator (1) according to any one of the preceding claims, wherein the control device (30) comprises a lever (32) arranged at one end of the drive shaft (31) for rotating said shaft. training.
4. Actionneur (1) selon l'une quelconque des revendications précédentes, comprenant en outre un arbre de recopie (33) monté mobile en rotation autour d'un deuxième axe (Y2) orthogonal à l'axe d'effort (X), l'arbre de recopie comportant une dent (33.1) coopérant avec le au moins un premier relief (22.1) ou avec au moins un deuxième relief (22.2) de l'organe d'actionnement (22) de sorte qu'une translation de l'ensemble mobile entraîne une rotation de l'arbre de recopie. 4. Actuator (1) according to any one of the preceding claims, further comprising a copying shaft (33) mounted movably in rotation about a second axis (Y2) orthogonal to the force axis (X), the copying shaft comprising a tooth (33.1) cooperating with the au at least a first relief (22.1) or with at least a second relief (22.2) of the actuator (22) so that a translation of the movable assembly causes a rotation of the copying shaft.
5. Actionneur (1) selon la revendication 4, comprenant un aimant (34) permanent porté par l'arbre de recopie (33), et un capteur (35) à effet Hall agencé pour détecter un champ magnétique émis par l'aimant lorsque l'arbre de recopie est dans une position angulaire correspondant à l'une des positions extrêmes du noyau (21). 5. Actuator (1) according to claim 4, comprising a permanent magnet (34) carried by the copying shaft (33), and a Hall effect sensor (35) arranged to detect a magnetic field emitted by the magnet when the copying shaft is in an angular position corresponding to one of the extreme positions of the core (21).
6. Valve (V) de frein de parking d'aéronef comprenant un actionneur (1) selon l'une quelconque des revendications précédentes et un élément de distribution mobile (2) entre deux positions de service, l'organe d'actionnement (22) étant relié à l'élément de distribution pour commander un déplacement dudit élément de distribution entre deux positions de service. 6. Aircraft parking brake valve (V) comprising an actuator (1) according to any one of the preceding claims and a movable distribution element (2) between two service positions, the actuator (22). ) being connected to the distribution element to control a movement of said distribution element between two service positions.
7. Valve (V) selon la revendication 6, dans laquelle l'élément de distribution (2) est un clapet ou un tiroir. 7. Valve (V) according to claim 6, wherein the distribution element (2) is a valve or a slide.
PCT/EP2021/061702 2020-05-05 2021-05-04 Manually controlled electromagnetic actuator and parking brake valve provided with such an actuator WO2021224241A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US17/997,945 US12038098B2 (en) 2020-05-05 2021-05-04 Manually controlled electromagnetic actuator and parking brake valve provided with such an actuator
EP21722893.1A EP4146509B1 (en) 2020-05-05 2021-05-04 Manually operated electromagnetic actuator and parking brake valve equipped with such an actuator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FRFR2004471 2020-05-05
FR2004471A FR3110025B1 (en) 2020-05-05 2020-05-05 Manually operated electromagnetic actuator and parking brake valve fitted with such an actuator

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WO2021224241A1 true WO2021224241A1 (en) 2021-11-11

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EP (1) EP4146509B1 (en)
FR (1) FR3110025B1 (en)
WO (1) WO2021224241A1 (en)

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Publication number Priority date Publication date Assignee Title
US5365210A (en) * 1993-09-21 1994-11-15 Alliedsignal Inc. Latching solenoid with manual override
DE102010000737A1 (en) * 2009-02-18 2010-08-19 Continental Teves Ag & Co. Ohg Electromechanically actuated brake

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US255162A (en) * 1882-03-21 Faucet
US780929A (en) * 1904-03-18 1905-01-24 William Angehr Self-closing faucet.
US1177761A (en) * 1914-11-18 1916-04-04 James H Clemmer Electrically-operated valve.
US1384443A (en) * 1920-05-08 1921-07-12 Brown Instr Co Electro valve mechanism
US1822388A (en) * 1929-07-15 1931-09-08 Herbert G Beede Steaming valve for garment presses
US3052828A (en) * 1959-08-05 1962-09-04 P S P Engineering Co Rotary electromagnetic actuator
US5504468A (en) * 1994-05-16 1996-04-02 Kabushiki Kaisha Tokai Rika Denki Seisakusho Electromagnetic solenoid
TW502096B (en) * 2001-12-28 2002-09-11 Ind Tech Res Inst One-way returning electromagnetic valve
FR3116165A1 (en) * 2020-11-12 2022-05-13 Safran Landing Systems Manually operated rotary electromagnetic actuator and parking brake valve equipped with such an actuator

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5365210A (en) * 1993-09-21 1994-11-15 Alliedsignal Inc. Latching solenoid with manual override
DE102010000737A1 (en) * 2009-02-18 2010-08-19 Continental Teves Ag & Co. Ohg Electromechanically actuated brake

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US20230175606A1 (en) 2023-06-08
EP4146509B1 (en) 2024-07-17
US12038098B2 (en) 2024-07-16
FR3110025B1 (en) 2022-05-06
FR3110025A1 (en) 2021-11-12
EP4146509A1 (en) 2023-03-15

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